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Journal articles on the topic 'Porphyra'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Yamasaki, Takashi, Yuka Miyazaki, and Yuto Kamei. "Isolation of bacteria that decompose major polysaccharides in the cell wall of the marine red alga Porphyra yezoensis and their application for protoplast production." Canadian Journal of Microbiology 44, no. 8 (1998): 789–94. http://dx.doi.org/10.1139/w98-070.

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We attempted to screen for bacteria that could decompose major polysaccharides in the cell wall of the marine red alga Porphyra yezoensis from Porphyra-culturing farms to enable simple and high-yield preparation of protoplasts with the crude enzyme from a single bacterial origin. A total of 275 positive bacterial strains were isolated by enrichment culture supplemented with Porphyra powder or xylan. Nine strains were capable of producing protoplasts from Porphyra thalli in a 10-fold concentrated culture broth. These strains were identified as two Flavobacterium spp., one Alteromonas sp., four

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2

Park, Jin-Hee, and Jae-Geun Koo. "Structural Features of Enzymatic Hydrolysate of Porphyran Isolated from Porphyra yezoensis." Korean Journal of Fisheries and Aquatic Sciences 44, no. 6 (2011): 630–34. http://dx.doi.org/10.5657/kfas.2011.0630.

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3

Kawamura, Y., K. Yokoo, M. Tojo, and M. Hishiike. "Distribution of Pythium porphyrae, the Causal Agent of Red Rot Disease of Porphyrae spp., in the Ariake Sea, Japan." Plant Disease 89, no. 10 (2005): 1041–47. http://dx.doi.org/10.1094/pd-89-1041.

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Distribution of Pythium porphyrae, the causal agent of red rot disease of Porphyra spp., in seafloor sediment was investigated in the Ariake Sea, Japan. A total of 170 samples of each 200 ml of sediment was collected from the seafloor at a total of 13 sites across the sea from 1998 to 2002. Each sample was filtered through two layers of nylon mesh with pore sizes of 100 and 15 μm. The residue on 15 μm mesh was assayed by a soil plating technique using a semiselective medium for P. porphyrae and by polymerase chain reaction (PCR) using species-specific primers. P. porphyrae were detected in 6 o

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4

Cao, Jin, Shi Cheng Wang, Liu Wei Xu, Jia Bing He, and Xi Ming Xu. "Extraction of Porphyran from Porphyra yezoensis for Gel Formulation Preparation." Key Engineering Materials 636 (December 2014): 133–37. http://dx.doi.org/10.4028/www.scientific.net/kem.636.133.

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Porphyran, which structure is similar with carrageenan and agarose, has application potential in drug form developmentas a new pharmaceutical material. Orthogonal experiment was employed to optimizethe porphyran extraction conditions from porphyra yezoensis. The extraction temperature, pH, ratio of liquid to raw material and extraction time were confirmed as 90°C, 11, 30:1 and 3h, respectively.The polysaccharide structure detected by IR spectra was consistent with porphyran, which was suitable for gel formulation preparation.

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5

Broom, J. E., W. A. Nelson, W. A. Jones, C. Yarish, R. Aguilar Rosas, and L. E. Aguilar Rosas. "PORPHYRA SUBORBICULATA, PORPHYRA CAROLINENSIS AND PORPHYRA LILLIPUTIANA ‐ THREE NAMES FOR ONE SMALL PORPHYRA." Journal of Phycology 36, s3 (2000): 7–8. http://dx.doi.org/10.1046/j.1529-8817.1999.00001-21.x.

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6

Tam, Carol E., Kathleen M. Cole, and David J. Garbary. "In situ and in vitro studies on the endophytic red algae Audouinella porphyrae and A. vaga (Acrochaetiales)." Canadian Journal of Botany 65, no. 3 (1987): 532–38. http://dx.doi.org/10.1139/b87-068.

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Audouinella porphyrae (Drew) Garbary and A. vaga (Drew) Garbary et al., endophytic species of Acrochaetiaceae growing in Porphyra and Pterosiphonia, respectively, were studied in the field and in culture. Host plants were common at Point No Point, Vancouver Island, from February to October, but endophytes were found only from May to October. Initial infections of both endophytes were in either the basal portions (species of Porphyra) or in the large principal axes (Pterosiphonia bipinnata) of the hosts. Although the endophytes had different morphologies when growing in situ, the species were m

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7

Ryu, Soung-Ryual. "Study on Manufactute of Porphyran Jam and Eppiciency Extraction Method of Porphyran from Porphyra yezoensis." Journal of the Korean Oil Chemists Society 30, no. 3 (2013): 504–17. http://dx.doi.org/10.12925/jkocs.2013.30.3.504.

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8

Adão, Pedro, João Reboleira, Marco Teles, et al. "Enhancement of the Antioxidant and Antimicrobial Activities of Porphyran through Chemical Modification with Tyrosine Derivatives." Molecules 26, no. 10 (2021): 2916. http://dx.doi.org/10.3390/molecules26102916.

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The chemical modification of porphyran hydrocolloid is attempted, with the objective of enhancing its antioxidant and antimicrobial activities. Sulfated galactan porphyran is obtained from commercial samples of the red algae Porphyra dioica using Soxhlet extraction with water at 100 °C and precipitation with isopropyl alcohol. The extracted porphyran is then treated with modified L-tyrosines in aqueous medium in the presence of NaOH, at ca. 70 °C. The modified tyrosines L1 and L2 are prepared through a Mannich reaction with either thymol or 2,4-di-tert-butylphenol, respectively. While the reac

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9

Kim, Su Yeon, Won Kyong Cho, Hye-In Kim, et al. "Transcriptome Profiling of Human Follicle Dermal Papilla Cells in response to Porphyra-334 Treatment by RNA-Seq." Evidence-Based Complementary and Alternative Medicine 2021 (January 13, 2021): 1–15. http://dx.doi.org/10.1155/2021/6637513.

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Porphyra-334 is a kind of mycosporine-like amino acid absorbing ultraviolet-A. Here, we characterized porphyra-334 as a potential antiaging agent. An in vitro assay revealed that porphyra-334 dramatically promoted collagen synthesis in fibroblast cells. The effect of porphyra-334 on cell proliferation was dependent on the cell type, and the increase of cell viability by porphyra-334 was the highest in keratinocyte cells among the three tested cell types. An in vivo clinical test with 22 participants demonstrated the possible role of porphyra-334 in the improvement of periorbital wrinkles. RNA-

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10

Li, Weidong, Zhihong Wei, Boyang Wang, et al. "Carbon quantum dots enhanced the activity for the hydrogen evolution reaction in ruthenium-based electrocatalysts." Materials Chemistry Frontiers 4, no. 1 (2020): 277–84. http://dx.doi.org/10.1039/c9qm00618d.

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The Ru supported on Porphyra-CQDs exhibited better dispersibility and the highest activity compared with biomass Porphyra and Porphyra activated carbon owing to the strong coordination interactions between Ru and CQDs.

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11

Nishide, Eiichi, Mitsunori Ohno, Hirosi Anzai, and Naoyuki Uchida. "Studies on porphyran from Porphyra yezoensis UEDA F. narawaensis MIURA. I. Extraction of porphyran from Porphyra yezoensis UEDA F. narawaensis MIURA." NIPPON SUISAN GAKKAISHI 54, no. 12 (1988): 2189–94. http://dx.doi.org/10.2331/suisan.54.2189.

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12

Lindstrom, Sandra C., and Kathleen M. Cole. "A revision of the species of Porphyra (Rhodophyta: Bangiales) occurring in British Columbia and adjacent waters." Canadian Journal of Botany 70, no. 10 (1992): 2066–75. http://dx.doi.org/10.1139/b92-256.

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Starch gel electrophoresis of proteins of Porphyra species occurring in British Columbia and nearby areas has provided new data on species identities. One new species is described, Porphyra kurogii (formerly identified as North Pacific P. purpurea), and its eastern Pacific distribution limit is extended from northern to southern British Columbia. Porphyra maculosa is recognized to be a taxonomic synonym of P. fucicola; new distribution records are provided. Porphyra cuneiformis is the correct name for specimens formerly identified as P. miniata in the area, and P. occidentalis is the correct n

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13

Choi, Seoyoung, Jeong Hun Lee, Sae Woong Oh, et al. "Anti-Pollutant Activity of Porphyra yezoensis Water Extract and Its Active Compound, Porphyra 334, against Urban Particulate Matter-Induced Keratinocyte Cell Damage." Marine Drugs 21, no. 2 (2023): 121. http://dx.doi.org/10.3390/md21020121.

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Urban particulate matter (UPM) causes skin aging and inflammatory reactions by influencing skin cells through the aryl hydrocarbon receptor (AhR) signaling pathway. Porphyra yezoensis (also known as Pyropia yezoensis), a red alga belonging to the Bangiaceae family, is an edible red seaweed. Here, we examined the anti-pollutant effect of P. yezoensis water extract. While UPM treatment induced xenobiotic response element (XRE) promoter luciferase activity, P. yezoensis water extract reduced UPM-induced XRE activity. Next, we isolated an active compound from P. yezoensis and identified it as porp

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14

Geng, Lihua, Jing Wang, Zhongshan Zhang, Yang Yue, and Quanbin Zhang. "Structure and Bioactivities of Porphyrans and Oligoporphyrans." Current Pharmaceutical Design 25, no. 11 (2019): 1163–71. http://dx.doi.org/10.2174/1381612825666190430111725.

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Background: Pyropia (Porphyra), commonly known as nori or laver, is an important food source in many parts of the world. Edible dried Pyropia contains numerous nutrients and biofunctional components, including proteins, vitamins, eicosapentaenoic acid, minerals, carotenoids, mycosporine-like amino acids, and carbohydrate, and one of the compounds which we are interested in is porphyran, a sulfated polysaccharide comprising the hot-water-soluble portion of Pyropia cell walls. Researchers have performed a large number of in-depth studies on the biological activity and potential therapeutic appli

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15

Li, Ying Chang, Ya Li Wang, and Zuo Wei Li. "Optimization of Extraction Process of Water-Soluble Polysaccharides from Porphyra by Response Surface Methodology." Advanced Materials Research 864-867 (December 2013): 526–30. http://dx.doi.org/10.4028/www.scientific.net/amr.864-867.526.

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Polysaccharide from Porphyra is a kind of important biological active substance. Therefore，it is significant to effectively develop and utilize the polysaccharide from porphyra and improve the economic and social benefits of porphyra. In this paper, polysaccharide was extracted by the method of hot water immersed extraction and ethanol precipitation. Extraction process of water-soluble polysaccharides from Porphyra was optimized by response surface methodology. The content of polysaccharide was determined by sulfuric acid to phenol method. The results show that the extraction time is 4.4 h, ex

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16

Li, Ying Chang, Xiao Zhang, and Jian Rong Li. "Extraction of Polyphenols from Porphyra and Scavenging Activity of Oxygen Free Radicals." Advanced Materials Research 864-867 (December 2013): 531–35. http://dx.doi.org/10.4028/www.scientific.net/amr.864-867.531.

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Polyphenols from Porphyra are important biological active substances. The effects of temperature, times, ethanol concentration and liquid to solid ratio were studied for the extraction yield of polyphenols from Porphyra through a single-factor exploration.Then, through an orthogonal experiment, it was investigated to get the best extraction conditions. The content of polyphenols was determined by Folin-Ciocalteu method. Scavenging ability to oxygen free radicals was also assessed. The results show that extraction temperature is 75°C, the extraction time is 2.5 h, ethanol concentration is 70% a

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17

Kerwin, James L., Lisa M. Johnson, Howard C. Whisler, and Amy R. Tuininga. "Infection and morphogenesis of Pythium marinum in species of Porphyra and other red algae." Canadian Journal of Botany 70, no. 5 (1992): 1017–24. http://dx.doi.org/10.1139/b92-126.

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A strain of Pythium marinum (Peronosporales: Pythiaceae) from Puget Sound, Washington, was isolated from lesions of Porphyra nereocystis. The fungus grew on a modified Vishniac medium, from temperatures of 4 to 25 °C, although growth was slow at the lowest temperature. Sexual and asexual reproduction also occurred within this temperature range. Mycelium diluted in seawater initiated zoospore release within 16 h and continued to release zoospores for over 200 h at temperatures from 4 to 20 °C. Zoospore encystment on several species of marine red, brown, and green algae was readily monitored fol

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18

JUNG, Bok-Mi, Tai-Sun SHIN, Hyung-Rak KIM, Kyoo-Jin JUNG, and Seon-Bong KIM. "Effect of Porphyran Isolated from Laver, Porphyra yezoensis on Calcium, Magnesium and Potassium Contents in Hyperlipidemic Rats." Korean Journal of Fisheries and Aquatic Sciences 36, no. 3 (2003): 220–24. http://dx.doi.org/10.5657/kfas.2003.36.3.220.

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19

Yi, Li‐Tao, Man‐Man Zhang, Jie Cheng, et al. "Antidepressant‐like Effects of Degraded Porphyran Isolated from Porphyra haitanensis." Molecular Nutrition & Food Research 65, no. 9 (2021): 2000869. http://dx.doi.org/10.1002/mnfr.202000869.

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20

Bhatia, Saurabh, Permender Rathee, Kiran Sharma, B. B. Chaugule, Nabanita Kar, and Tanmoy Bera. "Immuno-modulation effect of sulphated polysaccharide (porphyran) from Porphyra vietnamensis." International Journal of Biological Macromolecules 57 (June 2013): 50–56. http://dx.doi.org/10.1016/j.ijbiomac.2013.03.012.

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21

Suh, Sung-Suk, Se Kyung Oh, Sung Gu Lee, Il-Chan Kim, and Sanghee Kim. "Porphyra-334, a mycosporine-like amino acid, attenuates UV-induced apoptosis in HaCaT cells." Acta Pharmaceutica 67, no. 2 (2017): 257–64. http://dx.doi.org/10.1515/acph-2017-0015.

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Abstract The main aim of the current research was to study the effect of porphyra-334, one of mycosporine-like amino acids (MAAs), well known as UV-absorbing compounds, on UVinduced apoptosis in human immortalized keratinocyte (HaCaT) cells. Due to their UV-screening capacity and ability to prevent UV-induced DNA damage, MAAs have recently attracted considerable attention in both industry and research in pharmacology. Herein, human HaCaT cells were used to determine the biological activities of porphyra- 334 by various in vitro assays, including proliferation, apoptosis and Western blot assays

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22

Wang, Ting, Jiajun Xu, and Liyin Qu. "Optical Characteristics of Dissolved, Particulate and Sedimentary Organic Matter in Coastal Porphyra Cultivation Zone: A Case Study of Dayu Bay, China." Water 17, no. 4 (2025): 571. https://doi.org/10.3390/w17040571.

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Seaweed plays a critical role in marine carbon sequestration due to its high release rate of organic matter. However, the impacts of Porphyra cultivation on the concentration and composition of dissolved, particulate and sedimentary organic matter (DOM, POM and SOM) in coastal cultivation zones remain unclear. Herein, we investigated the optical properties of DOM, POM and SOM along a transect from the subtropical Chi River to the adjacent Porphyra cultivation zone in Dayu Bay (southeast China) during the late cultivation stage. The results revealed that all types of organic matter in coastal c

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23

Cheng, Yinhe, Yue Sun, Lin Peng, Yijun He, and Mengling Zha. "An Improved Retrieval Method for Porphyra Cultivation Area Based on Suspended Sediment Concentration." Remote Sensing 14, no. 17 (2022): 4338. http://dx.doi.org/10.3390/rs14174338.

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The rapid expansion of Porphyra farming in China lends considerable urgency to developing a satellite remote sensing retrieval method to monitor its cultivation, in order to promote sustainable economic development and protective utilization of ecosystem-oriented marine natural resources. For medium-resolution satellite imagery such as HY-1C images, pixel-by-pixel techniques are appropriate; however, many factors affect the retrieval accuracy of the Porphyra cultivation area. In coastal regions, Porphyra and suspended sediment radiate a similar spectrum, which inevitably causes errors in the i

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24

Lind, Vibeke, Martin R. Weisbjerg, Grete M. Jørgensen, Júlia E. Fernandez-Yepes, Lesly Arbesú, and Eduarda Molina-Alcaide. "Ruminal Fermentation, Growth Rate and Methane Production in Sheep Fed Diets Including White Clover, Soybean Meal or Porphyra sp." Animals 10, no. 1 (2020): 79. http://dx.doi.org/10.3390/ani10010079.

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The aim of the present work was to investigate the potential of Porphyra sp. as an alternative source of protein to soybean meal in diets for sheep. Our experimental treatments included a control diet (CON) based on grass silage and crushed oats and three diets containing protein supplements, clover silage (CLO), soybean meal (SOY) or Porphyra sp. (POR) to increase dietary crude protein concentrations. We studied its effects on rumen fermentation, growth rate and methane emissions. Ruminal fermentation characteristics, kinetics of gas production and methane production were studied in vitro by

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25

DUMILAG, RICHARD V., ZAE-ZAE A. AGUINALDO, CYNTHIA B. MINTU, et al. "A review of the current taxonomic status of foliose Bangiales (Rhodophyta) in the Philippines." Phytotaxa 312, no. 1 (2017): 47. http://dx.doi.org/10.11646/phytotaxa.312.1.3.

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Causes of taxonomic confusion are lamentably well known in foliose Bangiales. A magnitude of these uncertainties stems from the paucity of available taxonomic traits in morphologically homoplastic species. At present, the taxonomic identity and systematics of many of the Philippine foliose Bangiales are in a state of flux. A critical examination of published literature on Philippine records of 10 species of foliose Bangiales has rendered the need for re-confirmation of the presence of Porphyra atropurpurea, Porphyra marcosii, Pyropia denticulata, and Pyropia suborbiculata while records of Porp

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Liu, Zhiwei, Tianheng Gao, Ying Yang, et al. "Anti-Cancer Activity of Porphyran and Carrageenan from Red Seaweeds." Molecules 24, no. 23 (2019): 4286. http://dx.doi.org/10.3390/molecules24234286.

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Seaweeds are some of the largest producers of biomass in the marine environment and are rich in bioactive compounds that are often used for human and animal health. Porphyran and carrageenan are natural compounds derived from red seaweeds. The former is a characteristic polysaccharide of Porphyra, while the latter is well known from Chondrus, Gigartina, and various Eucheuma species, all in Rhodophyceae. The two polysaccharides have been found to have anti-cancer activity by improving immunity and targeting key apoptotic molecules and therefore deemed as potential chemotherapeutic or chemopreve

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27

Turner, Nancy J. "The ethnobotany of edible seaweed (Porphyra abbottae and related species; Rhodophyta: Bangiales) and its use by First Nations on the Pacific Coast of Canada." Canadian Journal of Botany 81, no. 4 (2003): 283–93. http://dx.doi.org/10.1139/b03-029.

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Porphyra abbottae Krishnamurthy is a nutritionally and culturally important species of red alga used by First Peoples of coastal British Columbia and neighbouring areas. This species, along with Porphyra torta and possibly others, is still harvested from wild populations in large quantities, dried and processed, and served in a variety of ways: toasted as a snack, cooked with clams, salmon eggs, or fish in soup, or sprinkled on other foods as a condiment. It is also a valued trade and gift item, especially on the central and northern coasts of British Columbia and Alaska. Common linguistic ori

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OSUMI, YUKIHIRO, MASANOBU KAWAI, HIDEOMI AMANO, and HIROYUKI NODA. "Physiological activities of oligosaccharides derived from marine algae Porphyra yezoensis Porphyran." Fisheries science 68, sup2 (2002): 1441–44. http://dx.doi.org/10.2331/fishsci.68.sup2_1441.

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29

Fukui, Youhei, Mahiko Abe, Masahiro Kobayashi, et al. "Sulfitobacter porphyrae sp. nov., isolated from the red alga Porphyra yezoensis." International Journal of Systematic and Evolutionary Microbiology 64, Pt_2 (2014): 438–43. http://dx.doi.org/10.1099/ijs.0.053090-0.

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Gram-stain-negative, aerobic, halophilic bacteria, designated SCM-1T, LCM10-1 and CTBL-B-147, were isolated from modified half-strength SWM-III medium, PES medium and thalli after laboratory cultivation of a red alga, Porphyra yezoensis. Phylogenetic analysis of 16S rRNA gene sequences indicated that the new isolates were affiliated to the genus Sulfitobacter of the class Alphaproteobacteria , and the 16S rRNA gene sequence similarity of the new isolates with the closest related species, Sulfitobacter mediterraneus CH-B427T, was 98.8 %. The DNA G+C contents of the new isolates were in the rang

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30

Zhao, Tingting, Quanbin Zhang, Huimin Qi, et al. "Degradation of porphyran from Porphyra haitanensis and the antioxidant activities of the degraded porphyrans with different molecular weight." International Journal of Biological Macromolecules 38, no. 1 (2006): 45–50. http://dx.doi.org/10.1016/j.ijbiomac.2005.12.018.

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31

Varela-Álvarez, Elena, Ana C. Balau, Cristina Paulino, Estibaliz Berecibar, Gareth A. Pearson, and Ester A. Serrão. "Isolation and characterization of microsatellite markers for the red alga Porphyra umbilicalis." Plant Genetic Resources: Characterization and Utilization 16, no. 4 (2017): 390–93. http://dx.doi.org/10.1017/s147926211700034x.

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AbstractThe red algal genus Porphyra is sister to the genus Pyropia, the single most valuable marine crop in the Orient. We developed microsatellite loci for the red alga Porphyra umbilicalis, a widespread species in the Northern Atlantic. Enriched DNA libraries were constructed and 68 loci were screened for amplification and polymorphism. Seven polymorphic microsatellite markers were isolated using 44 individuals collected from four natural populations. The number of alleles per locus ranged from two to 12. Null alleles were detected in three loci. Among the markers reported, we tested also c

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32

Dawe, Robert. "An overview of the cutaneous porphyrias." F1000Research 6 (October 30, 2017): 1906. http://dx.doi.org/10.12688/f1000research.10101.1.

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This is an overview of the cutaneous porphyrias. It is a narrative review based on the published literature and my personal experience; it is not based on a formal systematic search of the literature. The cutaneous porphyrias are a diverse group of conditions due to inherited or acquired enzyme defects in the porphyrin–haem biosynthetic pathway. All the cutaneous porphyrias can have (either as a consequence of the porphyria or as part of the cause of the porphyria) involvement of other organs as well as the skin. The single commonest cutaneous porphyria in most parts of the world is acquired p

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Klochkova, T. A., and G. H. Kim. "Diseases of the red seaweed Pyropia (= Porphyra) in Korean sea farms." Bulletin оf Kamchatka State Technical University, no. 32 (2015): 48–52. http://dx.doi.org/10.17217/2079-0333-2015-32-48-52.

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Qiu, Yanjun, Hong Jiang, Linlan Fu, Fangfang Ci, and Xiangzhao Mao. "Porphyran and oligo-porphyran originating from red algae Porphyra: Preparation, biological activities, and potential applications." Food Chemistry 349 (July 2021): 129209. http://dx.doi.org/10.1016/j.foodchem.2021.129209.

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35

Niwa, Kyosuke, and Atsushi Kobiyama. "Research Note: Simple molecular discrimination of cultivated Porphyra species (Porphyra yezoensis and Porphyra tenera) and related wild species (Bangiales, Rhodophyta)." Phycological Research 57, no. 4 (2009): 299–303. http://dx.doi.org/10.1111/j.1440-1835.2009.00549.x.

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36

Baptista, Ricardo S., Marco Teles, Pedro Adão, et al. "Morphological and Mechanical Characterization of Films Incorporating Porphyran Extracted from Porphyra Dioica." Coatings 12, no. 11 (2022): 1720. http://dx.doi.org/10.3390/coatings12111720.

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This paper studies the effects of glycerol plasticizers and/or alginate, pectin, and carboxymethylcellulose polysaccharides on the mechanical and physical properties of porphyran-based films to evaluate the films’ ability to be used as food packaging. Films were characterized in terms of their composition, microstructural and morphological features, thermal properties, water interaction, and mechanical performance. All films are homogeneous, transparent, and slightly brownish in color. The structures are amorphous and crosslinked, showing the films’ thermoset nature. Moisture content and water

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Huang, Chung-Hsiung, Wei-Chen Chen, Yu-Huei Gao, Guan-Wen Chen, Hong-Ting Victor Lin, and Chorng-Liang Pan. "Enzyme-Assisted Method for Phycobiliproteins Extraction from Porphyra and Evaluation of Their Bioactivity." Processes 9, no. 3 (2021): 560. http://dx.doi.org/10.3390/pr9030560.

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Due to the poor protein availability of algae in their unprocessed form, development of extraction methods for phycobiliproteins is of great significance. This study aimed to extract phycoerythrin (PE) and phycocyanin (PC) from Porphyra via bacterial enzymatic hydrolysis and to evaluate their bioactivity. To induce enzyme production, Porphyra powder was added into the culture medium of two marine bacterial strains. The pH and enzyme activity of the cultured supernatant, namely crude enzyme solution, were significantly raised. For PE and PC extraction, Porphyra were incubated within crude enzym

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38

Gutiérrez, Jorge, María Bagur, and M. Palomo. "Algal Epibionts as Co-Engineers in Mussel Beds: Effects on Abiotic Conditions and Mobile Interstitial Invertebrates." Diversity 11, no. 2 (2019): 17. http://dx.doi.org/10.3390/d11020017.

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Mussels and macroalgae have long been recognized as physical ecosystem engineers that modulate abiotic conditions and resources and affect the composition of rocky shore assemblages. Their spatial distributions in the intertidal zone frequently overlap, as many algal species thrive as epibionts on mussel beds. Nonetheless, their potential for combined engineering effects has not been addressed to date. Here we illustrate that Porphyra sp.—a desiccation-resistant macroalga that develops mostly epiphytically onto mussel beds—affects temperature, desiccation levels, and mobile interstitial invert

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Farr, T. J., W. A. Nelson, and J. E. S. Broom. "A challenge to the taxonomy of Porphyra in Australia: the New Zealand red alga Porphyra rakiura (Bangiales, Rhodophyta) occurs in southern Australia, and is distinct from P. lucasii." Australian Systematic Botany 16, no. 5 (2003): 569. http://dx.doi.org/10.1071/sb02025.

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Extensive collections of Porphyra from throughout New Zealand since the early 1980s have revealed unexpectedly high diversity within the genus. From small-scale, opportunistic sampling of southern Australian Porphyra, small subunit ribosomal RNA gene (SSU) sequence data confirm the presence in Tasmania of a recently-described species of Porphyra, P. rakiura W.A.Nelson. This is the first report of P. rakiura from outside New Zealand. Analysis of rbcL–rbcS spacer DNA sequence from P. rakiura specimens and from an isotype specimen of P. lucasii Levring confirm that P. rakiura can be distinguished

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Teles, Marco, Pedro Adão, Clélia Afonso, et al. "Development and Characterization of Films for Food Application Incorporating Porphyran Extracted from Porphyra dioica." Coatings 12, no. 2 (2022): 148. http://dx.doi.org/10.3390/coatings12020148.

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Non-biodegradable plastic is one of the biggest environmental problems of our lifetime and, considering the present societal needs, it will get worse. Consequently, there is an urgent need to develop sustainable and renewable alternatives to plastic, such as plastic-like materials obtained from biodegradable polymers, namely sulfated polysaccharides, considered one of the most viable alternatives. There is also a need to obtain these materials in an environmentally and economically sustainable way. The hereby developed process of obtaining film-forming solutions from semi-refined porphyran (Po

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Woolf, Jacqueline, Joanne T. Marsden, Timothy Degg, et al. "Best practice guidelines on first-line laboratory testing for porphyria." Annals of Clinical Biochemistry: International Journal of Laboratory Medicine 54, no. 2 (2017): 188–98. http://dx.doi.org/10.1177/0004563216667965.

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The porphyrias are disorders of haem biosynthesis which present with acute neurovisceral attacks or disorders of sun-exposed skin. Acute attacks occur mainly in adults and comprise severe abdominal pain, nausea, vomiting, autonomic disturbance, central nervous system involvement and peripheral motor neuropathy. Cutaneous porphyrias can be acute or chronic presenting at various ages. Timely diagnosis depends on clinical suspicion leading to referral of appropriate samples for screening by reliable biochemical methods. All samples should be protected from light. Investigation for an acute attack

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Machado, Marlene, Susana Machado, Filipa B. Pimentel, Victor Freitas, Rita C. Alves, and M. Beatriz P. P. Oliveira. "Amino Acid Profile and Protein Quality Assessment of Macroalgae Produced in an Integrated Multi-Trophic Aquaculture System." Foods 9, no. 10 (2020): 1382. http://dx.doi.org/10.3390/foods9101382.

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Seaweeds are a recognized source of bioactive compounds and techno-functional ingredients. However, its protein fraction is still underexplored. The aim of this study was to determine the total and free amino acid profile and protein content of four seaweeds species (Porphyra dioica, Porphyra umbilicalis,Gracilaria vermiculophylla, and Ulva rigida) produced in an integrated multi-trophic aquaculture system, while assessing their protein quality. Samples were submitted to acid and alkaline hydrolysis (total amino acids) and to an aqueous extraction (free amino acids) followed by an automated on

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BROOM, J. E., W. A. NELSON, C. YARISH, W. A. JONES, R. AGUILAR ROSAS, and L. E. AGUILAR ROSAS. "A reassessment of the taxonomic status of Porphyra suborbiculata, Porphyra carolinensis and Porphyra lilliputiana (Bangiales, Rhodophyta) based on molecular and morphological data." European Journal of Phycology 37, no. 2 (2002): 227–35. http://dx.doi.org/10.1017/s0967026202003566.

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Cermeño, Maria, Julianne Stack, Paul R. Tobin, et al. "Peptide identification from a Porphyra dioica protein hydrolysate with antioxidant, angiotensin converting enzyme and dipeptidyl peptidase IV inhibitory activities." Food & Function 10, no. 6 (2019): 3421–29. http://dx.doi.org/10.1039/c9fo00680j.

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Isaka, Shogo, Kichul Cho, Satoru Nakazono, et al. "Antioxidant and anti-inflammatory activities of porphyran isolated from discolored nori (Porphyra yezoensis)." International Journal of Biological Macromolecules 74 (March 2015): 68–75. http://dx.doi.org/10.1016/j.ijbiomac.2014.11.043.

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Malairaj, Sathuvan, Suresh Veeraperumal, Wanzi Yao, et al. "Porphyran from Porphyra haitanensis Enhances Intestinal Barrier Function and Regulates Gut Microbiota Composition." Marine Drugs 21, no. 5 (2023): 265. http://dx.doi.org/10.3390/md21050265.

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In this study, the effects of a homogenous porphyran from Porphyra haitanensis (PHP) on the intestinal barrier and gut microbiota were investigated. The results showed that oral administration of PHP resulted in a higher luminal moisture content and a lower pH environment for the growth of beneficial bacteria in the colon of mice. PHP significantly increased the production of total short-chain fatty acids during the fermentation process. PHP made the intestinal epithelial cells of mice arrange more tidily and tightly with a significant increase in mucosal thickness. PHP also increased the amou

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Redwood, Stewart D. "The Origin of the Porphyry Deposit Name: From Shellfish, Tyrian Purple Dye, and Imperial Rome to the World’s Largest Copper Deposits." SEG Discovery, no. 118 (July 1, 2019): 1–15. http://dx.doi.org/10.5382/segnews.2019-118.fea.

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Abstract The porphyry deposit name has a long and fascinating etymological history of over 3,000 years. “Porphyry” is derived from the ancient Greek word porphyra (πoρϕύρα), or purple. It was originally applied to a rare purple dye, Tyrian purple, extracted by the Phoenicians from murex shells. It was later applied to a prized purple porphyritic rock, Imperial Porphyry or Porfido rosso attico, quarried by the Romans from Mons Porphyrites in the Eastern Red Sea hills of Egypt from the first to fifth centuries A.D., and used as a monumental stone in Imperial Rome and Byzantium (Istanbul). The na

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Ogawa, Hiroo, Tuyosi Oohusa, Takahide Saito, Naomichi Iso, Haruo Mizuno, and Akihito Fujino. "Texture of nori Porphyra spp." NIPPON SUISAN GAKKAISHI 57, no. 2 (1991): 301–6. http://dx.doi.org/10.2331/suisan.57.301.

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SAKAMOTO, SHUICHI. "Industrial applications of Porphyra protoplasts." NIPPON SUISAN GAKKAISHI 73, no. 5 (2007): 952–53. http://dx.doi.org/10.2331/suisan.73.952.

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Park, Sung-Woo, and Dae-Hyun Kim. "Effects of a Commercial Activating Treatment Agent on Cultured Porphyra yezoensis thalli." Journal of fish pathology 26, no. 3 (2013): 275–82. http://dx.doi.org/10.7847/jfp.2013.26.3.275.

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